Two identical books are placed on a bookshelf. Book number 1 is on a shelf one meter above the floor

Complete question is;

Two identical books are placed on a bookshelf. Book 1 is on a shelf one meter above the floor and Book 2 is on a shelf two meters above the floor.

Which statement best compares the potential energy of the books.

A) Book 2 has twice as much potential energy as Book 1

B) Book 1 has twice as much potential energy as book 2

A: Book 2 has twice as much potential energy as Book 1

Explanation:

Formula for potential energy is;

P.E = mgh

Where;

m is mass

g is acceleration due to gravity

h is height

Now, they are identical books and thus will have the same mass while acceleration due to gravity remains constant.

For book 1 which is 1 metre above the floor;

P.E = mg × 1

P.E = mg

For book 2 which is 2 metres above the floor;

P.E = mg × 2

P.E = 2mg

We can see that potential energy for book 2 is twice that of book 1.

Thus,option A is correct.

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

answer///isobars;